Electrically-deivest sewing-machine



[I W. HDOUBLER.

ELECTRIGALLY DRIVEN SEWING MACHINE.

APPLICATION FILED MAY 12, 1919.

1,354,603, Patented Oct. 5, 1920.

R 2 SHEETS-SHEET I.

M, L ifiz ifw CLW. HDUUBLER.

ELECTRICALLY DRIVEN SEWING MACHINE.

APPLICATKON FILED MAY I2, 1919.

m g a t w UNITED STATES CHARLES W. HDOUBLER, 0E MADISON, WISCONSIN.

ELECTRICALLY-DRIVEN SEWING-MACHINE.

Application filed May 12, 1919.

o (572 in 11:2 it may concern.

iic it known that l, (ruining-t TV. HDou ISLI'IiL 1 citizen o1 tin= l mited Statics and residcnt oi liliui'son, in tho county of lions and *1 .L! of lVisconsin. have invented new and useful 1m novcmcnts in Elsctricollp rivcn Sowinglnchinos, of which the foilowing is n description, rcferenco being had to tho accompanying drawings, which arc a part oi" this spcciiicntion.

This invention relates to improvements in electrically driven sewing machines.

Sowing innchincs of the motor drivcn typo now on the innrkct nrc usunll n-ovidml with motors as attachments which are romovnhl i' mounted on the illziljllllli. Those Inuchincs, whilc very ciiicicnt, loo i'c much to be dc ircd as tho motors ocrup r considcrniilc space and. are more or loss in the way. Fun thsrinorc tho mid wuistrnctious are not as (,lvsirshlc as :l onion-y structure.

It one oi tho ohjutts of the present invcnliion to overcome tho before mentioned olijcctionuhlc t'cntlirrs and p ovide an eleci dica lv driven sowing machine in which the motor built within the standard of the inachinv nod forms :1 port thcrcofi f l 'l'ortizcr olrjcct of the lliVCIltlur] is to provide {in clccirlvnlly driven sowingmo ctiinc whirh is built within the standard of tho sowing nnwhioc in a manner to pcrmit rho nus; iziiitwlll of tho motor when desired.

A fin-liner ob ect of the invention is to provido an electrically driven sewing ma chine in which the armature shaft of the motor is provided with :1 policy on one end tho i" ii; Fri tional cngngenient with the d sh c -i of fin nun-hind the policy being pre' xl-lvd r iih Ilildiif? Whcrchy thesome mm in: lzdju oi to compensate for wear and to aim :i. ll the srnne to drive wheels of vniimui mmnC-irn' l, h -r ohjctt of the invention is to pro vido :i 'l1iElL ..ly driven sewing machine w: i of i-nnplc constrnction, is strong l i nd in ivoll adopted for the pin nos" 1 NJ V i and othvr objects in visw Hii as tho de cription pro-- in A i :11 i i -d n.- in tho novel-i our Specification of Letters Patent.

Patented Oct. 5 1920. Serial m. 296,347.

strut-lion, combination and arrangement of parts substantially as hereinafter described, and more particularly defined by the appcndcd claims, it being understood that such changes may he made in the precise omhodimont of my invention as come within tho scope of the claims.

In the accompanying drawings I have illustrated one complete example of the physical embodiment of my invention, construt-110d according to the best mode I have so For devised for the practical application oi the principles thereof, in which:

Figure 1 is a side view of the upper portion of my improved elcctricall driven sewing nmchine, parts being broken away and in section to show the interior; construction;

Fig. 2 is an end plan vicv of the improved sowing machine; i

Fig. 3 is a sectional view through the tubulnr sh-mdnrd of the improved sewing machine said View being taken on the line 3 3 of Fig. 1; and

Fig. l is a transverse sectional View taken on the lined-4 of Fig. 1.

Rofcrring to the drawing. the numeral 5 indicates a tubular standard of a sewing nnichinc 6 a tubular overarm communicating with the standard 5 and projecting latorally therefrom 7 a longitudinally extending drive-shaft journalcd in overarm 6, 8 a aortic-ah lover or actuating rod pivotally conncctcd to a crank 9 formed in shaft 7. and in a shuttle sh'aft operated by the rod 8. A drive orhand wheel 11 is fixed to the portion of shaft 7 projected outwardly of tho standard 5'.

The standard 5 has one side wall thereon bulged outwardly as at 11 to form a recess 12 in which a cylindrical housing or casing 13 is secured. he housing 13 having scoured therein tho field magnets and pole pieces 14 and 15. The housing 13 may be sci cured in its recess 12 in any desirable manner, and has its end extending outwardly of the standard 5 closed as at 16 to protect the brush Incmhcrs 17 engaging the commutator IR rarried by the armature 19. The shaft 20 of tho armature is journally supported by moons of n hearing 2 formed centrally on the closed end 16 ot' the housing and a hear ing memher 2'3 formed on the inner wall of standard 5 and having its bore in axial alinement with the hore ot' hearing it.

The armature shat't'has its inner end journaled in hearing 22 and its other end projeeted outwardly of the hearing 21. and has splined thereon a sleeve 23 earrving a trietion pulley meniher (to he later deserihed) whieh engaged with the periphery of drive wheel 11. In order to adapt the motor to the maehine running in either direetioin the brushes 1? are of the radial type and are mounted on a ring 24 and projeet through elongated slots 25. The ring and brush may herevolved a sntlieient distanee with rela tion to the hore pit-res to to t-hange the ptr larity of said magnets and thus reverse the direetion ot rotation of the armature 19. The brush ring 24 is held in position lrv binding posts 26 whieh extend upwardly and downwardly through the housing end 16.

The pulley memher rarried on the outer end of the armature shaft inelmles the sleeve "23 whirh has its inner end flanged as at QT and its outer end threaded as at 29. and a pair of lilier plates 29 having their periphery oppositely eurved to conform with the periphery or drive wheel l 1. said plates heing spaced apart by means of a eorl: washer or plate 30. The plates 29 and 30 are keyed or otherwise secured to the sleeve 23 and are held thereon by means of a. washer ill retained thereagainst hy means of a nut 32 in threaded engagement with the threaded end of said sleeve.

In a nuniher of maehines. the hand wheel is unhalanred and wahhles or sways from side to side in its rotation, and to eompensate for this side motion.

the sleeve .23 is slidahlv splined to armature shat't Q to pre vent the pulley From moving the shaft longitudinally in its ln'arings and at the same time allow the pulley to follow the hand wheel. As will he liliYlOlltf-l. the annularly grooved periphery of the pulley memher eir gaging the periphery of the hand heel. retains the pullev in position on shaft 20.

The form of pulley just desrrihrd permits the taking up of any lost motion due to exeessive wear. in that the t'urther tightening of nut Il? will eompress the rharaeter or other resilient material Illl in hringing the plates 29 into (loser relation ith rarli other aml thus redueing the are or r. rrature formed thereby. The (0th or other resilient material 30 also provides a t'rietional routaet with the drive wheel ll in that the same proieets slightly above the periphery of the pol ley.

From the foregoing deseription it will he seen that the motor for driving the sewing inaehine is readily removable and all that is necessary to remove the same is to remove the outermost plate 29 of the pulley. than remove drive wheel it and then remove the housing 13 and ari'nature shaft from the standard It will he also seen that the position of the motor witiiin the sewing marhine standard utilizes spare not otherwise employed in that the standard forms a proteetiou tor the motor.

ha I elaim as my invention is:

l. \n eleetrieally driven sewing machine eomprising a tubular sewing maehine head, a drive shaft. an eleetrie motor entirely ooiieealed within the tuhular head. v aid motor being bodily removable from the head and having its axis substantially parallel with the axis of said shat't. and a drive eonneetlOll lietween said shalt and motor.

2. din eleetrieallv driven sewing mat-hine romprising a tuhula r sewing maehine head. a longitudinally extending aha a. drive wheel fixed on said shal't. an eleetrie motor mounted in said tuhula r head and inelnding an armature shalt disposed suhstantiallv parallel to the first named shatt. and drive means rarried hy the armature shaft and engaging the drive wheel.

It. .\n eleetrieallv driven sewing marhine eolnprising a tubular sewing marhine head inrluding a supporting arm and a laterally extending arm. a shaft journaled in one of the arms. and an eleetrie motor mounted in the other of said. arms and in drive eonnee tion with the shaft. the motor having its axis snhstantially parallel with said shaft and heing slightly to one side of the arm in whieh it is mounted where-li e an imaginary line drawn perpendirular through the axis ot said shatt will pass through the motor to one side of the axis thereof.

-l-. in eleetrirallv driven sewing machine. romprising a tuhular sewing machine head. a drive shaft journulrd therein. a drive wheel lixed to the drive shaft. an eleetrie motor lorated in the tnl ular head and having an armature shalt ltllrtit'llliilly parallel to the drive r-hat't. and a pulley iixed to the, armature shaft and in l'rietioua! engagement with said dri\ e wheel.

5, Au elia-trieallv driven sewing machine eompri ing n tuhular sewing ma hine head including a supporting standard and a laterallv extending arm. a drive shalt journaled in said lateral arm and having one end prolet-ted outwardly thereof. a drive. wheel lined to the pririe ted end of said shaft. an elevtiir motor di posed in said standard and having an armatur shalt sul tantiallv parallel to the tll'ttt? shaft. and a pullev in nr l-rr timed to the armature haft and on will. it drive wheel. said puller hen justallle to vary its tri lion with the drive wheel ti. i\n rl ttri i illil'il sewing in"; ttlllll li'l lllj t 1 int l :i lull L l il moddin i 'il l H nhmI un tho shn ['t, an elvctl'ic motor mount M m ihv tubular head and including an :lr-nmhn'o shaft. and a pulley shllnhly S6- vnrml (0 HH- armature shaft and in frivtionnl a znmgonwnt with will drive wheel.

T. \n vmnmn driven sewing machinu mnlprising n mnving machine head, a drive shn H, :l hivc wheel on the shaft, an electric motor mounlml juxtaposed the drive shaft and whvul and including an nrnmtm'e shaft, and a pulh'y slnlahly sevured tn the unnafuro shaft and in fri 'limml mlgag mnent with mid (h'iw whvvl.

In tvstnnuxn, hm-00F, I 211); my signntura (.ll \RLES W. HDOUBLER. 

